What Martello does

Martello (formerly MyNestBox, legal entity MyNestBox Limited) is a UK-based property search technology company founded in 2020 and headquartered in Bristol, England. The company provides AI-assisted environmental, climate change, mining, and flood risk search reports for residential and commercial property transactions in England and Wales. Its core technology is what it describes as the first live property constraints database for home buying, processing 10,000+ datasets from 700 data sources continuously against all 30 million properties. The product suite comprises the modular Enviro Report (with optional Climate and Planning applications add-ons), a Law Society-licensed Official CON29M coal mining search, a Mines & Minerals report covering non-coal mining due diligence, and Flood Reviews — all delivered as interactive, browser-based, machine-readable digital reports that can be refreshed free of charge through to exchange.

Martello monetizes transactionally on a per-report basis, with residential Enviro at £59.85+VAT, full residential bundles at up to £79.85+VAT, commercial Lite tiers from £160+VAT, CON29M at £40+VAT, and Flood Reviews up to £295+VAT. Distribution runs through four channels: a self-serve direct website (martello.app) for SMB conveyancers, a reseller network, an API integrated into ProConvey's digital conveyancing platform, and outbound sales development targeting larger firms. Primary customers are conveyancers and property law firms, with mortgage lenders as a secondary segment. The team of 14+ includes specialist risk leads across mining/ground stability, climate change, flood, and contaminated land, plus a Senior Data Engineer who built the production LightGBM classification model. Martello is independently owned by its founders, is registered with the Property Codes Compliance Board (PCCB) Search Code, and is a Corporate Partner of IPSA.

Name

Martello

Legal name

MyNestBox Limited

Website

https://martello.app

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

Martello provides AI-assisted environmental, climate, mining, and flood risk search reports for UK property transactions, serving conveyancers, property lawyers, and mortgage lenders across England and Wales via on-demand digital reports backed by a live property constraints database.

Ownership category

akta.pro rank

Product category

Property Search Technology / Environmental Due Diligence

NAICS

Web Search Portals and All Other Information Services (51929)

akta.pro primary industry

Property Tax & Municipal Lien Search Services (BPAJAOAJ)

Keywords

• Environmental property searches
• Conveyancing search reports
• Property risk assessment
• Mining due diligence
• Flood risk analysis

Headquarters

HQ city

Bristol

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Environmental Search Reports (Transaction-based): Each property transaction generates a one-time report purchase. Customers select from a menu of report products (Enviro, Enviro+Climate, Enviro+Planning, Mines & Minerals, CON29M, Flood Review) at fixed per-report prices. No subscription required — reports are ordered on-demand per transaction. Refreshes within 6 months or at point of exchange are provided free of charge.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

Martello sells AI-enhanced digital property search reports for conveyancing transactions in England and Wales, processing 10,000+ environmental, mining, flood, planning, and climate datasets against 30 million properties via a live property constraints database. Its product suite includes residential and commercial Enviro Reports (with optional Climate and Planning modules), official Law Society CON29M coal mining searches, Mines and Minerals due diligence reports, and specialist Flood Reviews, all delivered as interactive, machine-readable, refreshable outputs with embedded expert human interpretation.

Product overview

Martello provides a modular environmental search report platform for UK property transactions, comprising a core Enviro Report available in residential and commercial variants, enhanced by optional add-on modules for climate change and planning applications. The product suite also includes specialized Flood Review services, an Official Law Society-licensed CON29M coal mining search, and a Mines and Minerals report covering non-coal mining risks. All reports feature interactive online mapping, machine-readable outputs, and free refresh capabilities. The company rebranded from MyNestBox to Martello while maintaining operations under MyNestBox Limited.

Differentiator

Problem solved

Functional benefit

Brands

• Martello Enviro Report: Environmental search report for residential properties covering contamination, flood risk, ground stability, and climate risks.
• Martello Enviro and Climate Change Report
• Martello Enviro and Planning Applications Report
• Martello Con29m
• Martello Mines and Minerals Report
• Flood Review

Products and services

• Martello Enviro Report
• Martello Enviro and Climate Change Report
• Martello Enviro and Planning Applications Report
• Martello Enviro, Climate Change and Planning Application Report
• Martello Enviro Report – Commercial Lite
• Flood Review
• Martello CON29M (Official Coal Mining Search)
• Martello Mines and Minerals Report
• Martello Conveyancer Clause Pack
• Same Day Search (API)

Quantifiable outcome

• ~80% fewer failed reports compared to market alternatives
• +3 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability3 records

Feature8 records

Partnerships

Six partnerships are on record, tiered core.

• British Geological SurveycoreStrategic or Co-development Partner · 11 June 2026British Geological Survey partnered with Martello during the development of the Mines & Minerals report, providing geological expertise and data to ensure rigorous mining risk assessment, particularly for non-coal mining regions.
• Mining Remediation Authority (Coal Authority)coreStrategic or Co-development Partner · 11 June 2026The Mining Remediation Authority (formerly Coal Authority) partnered with Martello during Mines & Minerals report development, contributing authoritative mining data and expertise to support the official CON29M and broader mining due diligence product.
• Cornwall Mining ConsultantscoreStrategic or Co-development Partner · 11 June 2026Cornwall Mining Consultants provided full interpretive assessment for historic metalliferous mining across the South West as part of Martello's Mines & Minerals report development. This partnership is particularly important for Cornwall and Devon regions where historic metal mining is highly localised and difficult to assess through automated datasets alone.
• ProConveycoreTechnology or Integration · 22 October 2025Martello's interactive environmental reports (flood risk, contamination, planning constraints) are fully integrated within ProConvey's all-in-one digital conveyancing platform, enabling conveyancers to access live, refreshable risk data within their existing case management workflow. The partnership supports Martello's strategy of embedding its live, machine-readable data into third-party conveyancing platforms.
• Ashfield SolutionscoreStrategic or Co-development Partner · 8 January 2025Martello co-hosts webinars with Ashfield Solutions on flood risk and environmental due diligence. Ashfield also provides expert environmental consultancy review in Martello's reports — specifically for contaminated land cases where 'Potential Issues' are identified, Ashfield carries out additional checks. The partnership involves joint content development and expert review integration.
• Association of Independent Personal Search Agents (IPSA)coreGTM or Marketing Partner · 27 September 2023Martello joined IPSA as a Corporate Partner, aligning with its mission to create an independent, conveyancer-focused, user-friendly environment product. The membership provides access to industry knowledge, legal updates, and best-in-class resources, while Martello participates actively in IPSA's initiatives to elevate industry standards.

Scale indicators8 records

Recent moves7 records

Expansion highlights7 records

Direct peers

• Groundsure: One of the UK's largest environmental search providers, offering residential and commercial environmental reports including contaminated land, flood, ground stability, and mining. Directly competes with Martello's core Enviro, CON29M, and Mines & Minerals products for the same conveyancer and lender customers.
• Future Climate Info: UK environmental search provider specialising in climate change, flood, and ground stability reports for conveyancers. Direct competitor in the environmental + climate report category that overlaps with Martello's Enviro+Climate product.
• Terrafirma: Ground stability and mining risk specialist founded by Tom Backhouse, now Martello's Risk Assessment Lead. Directly comparable in mining/ground stability due diligence and a precedent for Martello's Mines & Minerals product strategy.
• Argyll Environmental: UK provider of residential and commercial environmental searches focused on conveyancing. Directly competes with Martello for independent conveyancer and panel management customers seeking alternative search providers.
• Conveyancing Data Services: UK conveyancing search and data provider offering environmental, water, drainage, and chancel searches. Directly comparable transactional search portfolio targeting the same conveyancing customer base as Martello.
• Homecheck by Landmark: Residential environmental and conveyancing search product from Landmark, positioned against Martello Enviro for residential conveyancers. Direct same-customer competitor for SMB conveyancing firms.

Broad incumbents

• Landmark Information Group: Long-established UK environmental and property search provider, now owned by Dye & Durham, offering a broad portfolio of environmental, flooding, mining, and conveyancing search products. The dominant incumbent against which Martello positions itself as an independent alternative.
• Dye & Durham: Canadian-listed legal technology group that acquired Landmark Information Group; broader conveyancing technology and search platform owner. Indirect competitor through Landmark and direct threat via cross-sell to conveyancing panel customers.

Emerging players

• JBA Risk Management: Flood risk modelling specialist offering flood-focused reports for the UK property and insurance markets. Comparable to Martello's Flood Review product and emerging partner/competitor in specialist flood due diligence.

Others

• ProConvey: Digital conveyancing case management platform that has integrated Martello's Same Day Search API. Listed as a peer because it is the embedding channel/distribution partner for Martello's reports in conveyancing workflows, and competing platforms represent both opportunity and channel risk.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/martelloapp

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Martello